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Asteroid

Sibylla

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168 Sibylla (A876 SA)

Where is it now

Distance from Sun
3.196 AU
True anomaly
48.55°
Distance from Earth
2.558 AU
As of
21 October 2026

Two-body Kepler propagation — accurate to ~0.1% for major planets over decades, less so for highly-perturbed bodies. Use JPL Horizons for high precision.

Orbit of Mercury Orbit of Venus Orbit of Mars Sun Earth — 0.995 AU from the Sun Earth Sibylla — 3.196 AU from the Sun Sibylla
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. Sibylla is 2.558 AU from Earth today (21.3 light-minutes).

In the sky

Right ascension
05h 45m 08s
Declination
+19° 13′ 41″
Constellation
Taurus
Distance from Earth
2.55 AU
Elongation from the Sun
122.31° — well clear of the Sun

Favours the northern hemisphere; low or below the horizon from far south.

From your location

See how high it is right now, whether it is up after civil twilight, and when it rises and sets where you are.

How do I find my coordinates?

Google Maps on a computer

  1. Right-click the spot where you'll be observing.
  2. The first line of the menu is the coordinates, e.g. 51.50722, -0.12758 — click it and they're copied.
  3. Paste them above.

Google Maps on a phone

  1. Press and hold the spot to drop a pin.
  2. The coordinates appear in the search bar (or on the pin's card) — tap to copy, then paste above.

A full Google Maps link works too, but the short maps.app.goo.gl share links don't carry coordinates — copy the numbers instead. We round to about a kilometre; that's all the sky calculation needs.

Know your what3words address? Paste it, e.g. ///filled.count.soap. This is optional — the three words are sent to what3words to convert them, and we don't store the address or the result.

Your location stays in your browser and is sent only for this calculation. Using a what3words address is optional; if you do, the three words go to what3words to be converted and we don't record them. Set a location first, then you can save an email alert for this object. See our privacy policy.

Two-body approximation, good to about a degree for the planets — enough to find the constellation and know whether it is up.

Orbital elements

Semi-major axis
3.371 AU
Eccentricity
0.0742
Inclination
4.67°
Orbital period
6.19 years
Perihelion
3.121 AU
Aphelion
3.622 AU
Longitude of ascending node
205.91°
Argument of periapsis
176.76°
Epoch · J2000
2461200.5
Orbit class · OMB
Outer main-belt asteroid
Earth MOID · 826.1 LD
2.1228 AU
Tisserand (Jupiter)
3.144

Orbit quality

Orbit very well determined (uncertainty code 0).

Observations used
13,098
Data arc
149.4 years
First observed
14 October 1876
Last observed
26 February 2026
Residual RMS
0.24 ″
Solution · Otto Matic
5 June 2026

Physical properties

Mean radius
73 km
Rotation period
47.01 hours

Visual & observation

Geometric albedo
0.056
Absolute magnitude (H)
8.27
Colour index (B–V)
0.75
Spectral type (SMASS)
Ch
Spectral type (Tholen)
C
Colour index (U–B)
0.38

Discovery & classification

Discovered by
Watson, J. C.
Discovery date
28 September 1876
Discovery site
Ann Arbor

Also known as 168 · A876 SA · 1949 MO · A911 HF

Main-Belt Asteroid Named

Close approaches 23 on record

When (UTC) Body Distance Lunar distances Relative speed
2029-01-19 16:37:00 Juptr 1.8342 AU 713.8 LD 2.8 km/s
2042-01-14 14:21:00 Juptr 1.7892 AU 696.3 LD 2.8 km/s
2055-01-17 03:03:00 Juptr 1.7597 AU 684.8 LD 2.7 km/s
2068-02-07 14:44:00 Juptr 1.7315 AU 673.9 LD 2.7 km/s
2081-03-15 12:19:00 Juptr 1.704 AU 663.2 LD 3 km/s
2094-04-16 21:08:00 Juptr 1.7005 AU 661.8 LD 3.4 km/s
2107-05-11 12:30:00 Juptr 1.7466 AU 679.7 LD 3.5 km/s
2120-06-03 15:44:00 Juptr 1.8254 AU 710.4 LD 3.3 km/s
2133-06-26 15:52:00 Juptr 1.8837 AU 733.1 LD 3 km/s
2146-07-08 19:28:00 Juptr 1.883 AU 732.8 LD 2.9 km/s

Next ten from today. 1 lunar distance = 384,400 km. Source: JPL close-approach data.

Sources